单选题 During the 1800's and early 1900's, new academic disciplines such as chemistry and physics made great headway.
A. sacrifice B. forefront
C. preconceptions D. progress

【正确答案】 D
【答案解析】[解析] headway“进展”与D项的progress“进步”含义接近。sacrifice“牺牲”；forefront“最前线”；preconceptions“偏见”。